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		<h1>[name]</h1>

		<p class="desc">
		A class containing utility functions for shapes.<br /><br />

		Note that these are all linear functions so it is neccessary to calculate separately for
		x, y (and z, w if present) components of a vector.
		</p>


		<h2>Methods</h2>

		<h3>[method:Number area]( contour )</h3>
		<p>
		contour -- 2D polygon. An array of THREE.Vector2()<br /><br />

		Calculate area of a ( 2D ) contour polygon.
		</p>

		<h3>[method:Boolean isClockWise]( pts )</h3>
		<p>
		pts -- points defining a 2D polygon<br /><br />

		Note that this is a linear function so it is neccessary to calculate separately for
		x, y  components of a polygon.<br /><br />

		Used internally by [page:Path Path],
		[page:ExtrudeGeometry ExtrudeGeometry] and [page:ShapeGeometry ShapeGeometry].
		</p>

		<h3>[method:Array triangulateShape]( contour, holes )</h3>
		<p>
		contour -- 2D polygon.<br />
		holes -- array of holes<br /><br />

		Used internally by [page:ExtrudeGeometry ExtrudeGeometry] and [page:ShapeGeometry ShapeGeometry] to calculate faces in shapes with holes.
		</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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